反应详情

0.1 mol (15.3 g) of 3-nitro-ortho-phenylenediamine is dissolved in 50 ml of pyridine, and 0.11 mol (21 g) of para-toluenesulphonyl chloride is then added gradually, whilst stirring, at between 40° and 45° C. When the addition has ended, the stirring is maintained for 15 minutes and the reaction medium is then poured into 250 ml of iced water. The expected product precipitates. It is filtered off, washed with water and recrystallised from acetic acid. It melts at 195° C.

1. additionWhen the addition
2. temperaturethe stirring is maintained for 15 minutes
3. customThe expected product precipitates
4. filtrationIt is filtered off
5. washwashed with water
6. customrecrystallised from acetic acid